Fix flow (react-native-image-picker#947)

* Fix Flow

* Add CircleCI config

.circleci/config.yml

@@ -0,0 +1,31 @@
+aliases:
+  - &save-cache-yarn
+    key: yarn-packages-{{ checksum "yarn.lock" }}
+    paths:
+      - ~/.cache/yarn
+  - &restore-cache-yarn
+    name: Restore Yarn Package Cache
+    keys:
+      - yarn-packages-{{ checksum "yarn.lock" }}
+
+defaults: &defaults
+  working_directory: ~/react-native-image-picker
+  docker:
+    - image: circleci/node:10
+
+version: 2
+jobs:
+  build:
+    <<: *defaults
+    steps:
+      - checkout
+      - restore_cache: *restore-cache-yarn
+      - run:
+          name: Yarn Install
+          command: |
+            yarn install --no-progress --non-interactive --cache-folder ~/.cache/yarn
+      - run:
+          name: Flow
+          command: |
+            yarn flow
+      - save_cache: *save-cache-yarn

.flowconfig

@@ -0,0 +1,69 @@
+[ignore]
+; We fork some components by platform
+.*/*[.]android.js
+
+; Ignore "BUCK" generated dirs
+<PROJECT_ROOT>/\.buckd/
+
+; Ignore unexpected extra "@providesModule"
+.*/node_modules/.*/node_modules/fbjs/.*
+
+; Ignore duplicate module providers
+; For RN Apps installed via npm, "Libraries" folder is inside
+; "node_modules/react-native" but in the source repo it is in the root
+.*/Libraries/react-native/React.js
+
+; Ignore polyfills
+.*/Libraries/polyfills/.*
+
+; Ignore metro
+.*/node_modules/metro/.*
+
+[include]
+
+[libs]
+node_modules/react-native/Libraries/react-native/react-native-interface.js
+node_modules/react-native/flow/
+
+[options]
+emoji=true
+
+esproposal.optional_chaining=enable
+esproposal.nullish_coalescing=enable
+
+module.system=haste
+module.system.haste.use_name_reducers=true
+# get basename
+module.system.haste.name_reducers='^.*/\([a-zA-Z0-9$_.-]+\.js\(\.flow\)?\)$' -> '\1'
+# strip .js or .js.flow suffix
+module.system.haste.name_reducers='^\(.*\)\.js\(\.flow\)?$' -> '\1'
+# strip .ios suffix
+module.system.haste.name_reducers='^\(.*\)\.ios$' -> '\1'
+module.system.haste.name_reducers='^\(.*\)\.android$' -> '\1'
+module.system.haste.name_reducers='^\(.*\)\.native$' -> '\1'
+module.system.haste.paths.blacklist=.*/__tests__/.*
+module.system.haste.paths.blacklist=.*/__mocks__/.*
+module.system.haste.paths.blacklist=<PROJECT_ROOT>/node_modules/react-native/Libraries/Animated/src/polyfills/.*
+module.system.haste.paths.whitelist=<PROJECT_ROOT>/node_modules/react-native/Libraries/.*
+
+munge_underscores=true
+
+module.name_mapper='^[./a-zA-Z0-9$_-]+\.\(bmp\|gif\|jpg\|jpeg\|png\|psd\|svg\|webp\|m4v\|mov\|mp4\|mpeg\|mpg\|webm\|aac\|aiff\|caf\|m4a\|mp3\|wav\|html\|pdf\)$' -> 'RelativeImageStub'
+
+module.file_ext=.js
+module.file_ext=.jsx
+module.file_ext=.json
+module.file_ext=.native.js
+
+suppress_type=$FlowIssue
+suppress_type=$FlowFixMe
+suppress_type=$FlowFixMeProps
+suppress_type=$FlowFixMeState
+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixMe\\($\\|[^(]\\|(\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)
+suppress_comment=\\(.\\|\n\\)*\\$FlowIssue\\((\\(<VERSION>\\)? *\\(site=[a-z,_]*react_native[a-z,_]*\\)?)\\)?:? #[0-9]+
+suppress_comment=\\(.\\|\n\\)*\\$FlowFixedInNextDeploy
+suppress_comment=\\(.\\|\n\\)*\\$FlowExpectedError
+
+[version]
+^0.82.0

.gitignore

@@ -33,9 +33,8 @@ xcuserdata/
 ### Node
 node_modules
 *.log
-yarn.lock
 
 ## Android iml
 *.iml
 
-.vscode/
+.vscode/

.npmignore

@@ -1,3 +1,4 @@
 Example/
 images/
 node_modules/
+yarn.lock

index.js.flow

@@ -60,7 +60,7 @@ declare export function launchImageLibrary(options: ?Options, callback: (respons
 declare export function launchImageLibrary(callback: (response: Response) => any): void;
 
 declare export default {
-  showImagePicker(options: ?Options, callback: (response: Response) => any): void
+  showImagePicker(options: ?Options, callback: (response: Response) => any): void,
   launchCamera(options: ?Options, callback: (response: Response) => any): void,
   launchImageLibrary(callback: (response: Response) => any): void,
 };

package.json

@@ -35,9 +35,10 @@
   "types": "./index.d.ts",
   "license": "MIT",
   "devDependencies": {
+    "flow-bin": "0.82.0",
     "husky": "^1.1.0",
     "lint-staged": "^7.3.0",
-    "prettier": "^1.14.3"
+    "prettier": "1.14.3"
   },
   "husky": {
     "hooks": {